A little girl calls a man a pervert because he is seen hanging out with her brother.

One scene where an octopus merman character rubs his tentacles on the main character trying to clean him. Not sexual. But out of context, these scene can be considered suggestive.

Many male merfolk are seen topless.

In one episode, the bath water gets replaced with alchohlic beverages. A character is briefly shown drinking a wine bottle.